CNBC Poll: Is Commodities Speculation Driving Up Food Prices?

Cocoa. Corn. Beef. Pork. All of these commoditieshave seen enormous price increases in the last year.

Food Economics - A CNBC Special Report

Sure, bad weather is to blame for some it, but there's a growing chorus of people — including CEOs, such as Howard Schultz of Starbucks — who say commodities market speculation is a major factor in driving up food prices.